420332525 has 48 divisors (see below), whose sum is σ = 561422400. Its totient is φ = 311592960.

The previous prime is 420332513. The next prime is 420332527. The reversal of 420332525 is 525233024.

It is not a de Polignac number, because 420332525 - 2²² = 416138221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420332494 and 420332503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420332527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3023906 + ... + 3024044.

It is an arithmetic number, because the mean of its divisors is an integer number (11696300).

Almost surely, 2^420332525 is an apocalyptic number.

It is an amenable number.

420332525 is a deficient number, since it is larger than the sum of its proper divisors (141089875).

420332525 is a wasteful number, since it uses less digits than its factorization.

420332525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 420332525 is about 20502.0127060735. The cubic root of 420332525 is about 749.0848244666.

Adding to 420332525 its reverse (525233024), we get a palindrome (945565549).

The spelling of 420332525 in words is "four hundred twenty million, three hundred thirty-two thousand, five hundred twenty-five".